なんかもうめっちゃ変えた

packages/backend/src/models/entities/Signin.ts

@@ -0,0 +1,35 @@
+import { PrimaryColumn, Entity, Index, JoinColumn, Column, ManyToOne } from 'typeorm';
+import { id } from '../id.js';
+import { User } from './User.js';
+
+@Entity()
+export class Signin {
+	@PrimaryColumn(id())
+	public id: string;
+
+	@Column('timestamp with time zone', {
+		comment: 'The created date of the Signin.',
+	})
+	public createdAt: Date;
+
+	@Index()
+	@Column(id())
+	public userId: User['id'];
+
+	@ManyToOne(type => User, {
+		onDelete: 'CASCADE',
+	})
+	@JoinColumn()
+	public user: User | null;
+
+	@Column('varchar', {
+		length: 128,
+	})
+	public ip: string;
+
+	@Column('jsonb')
+	public headers: Record<string, any>;
+
+	@Column('boolean')
+	public success: boolean;
+}